PSP help

I just bought PSP version 2.71 running henb and devhook 0.46
I only put around 400MB on my 2 GB memory card and my card is almost full, any help please?
also if i wanted to use different memory stick do i just copy the content of my old memory card or would i have to go through the installation process?
thanks in advance for all your help, i am totally new to this PSP business

you are better off downgrading to 1.5 then upgrading to 3.03 OE-B you will have do do alot of reading and be very careful.make sure you are 100% sure you know hat you are doing.there is a full downgrader program 2.71 to 1.5 use that for a start follow all the instructions.there is a link in tis forum to the program.

thanks for all your help.
but i don't want to downgrade as i can access version from 1 up to 2.71 through devhook.
What i am asking is if i use a new memory stick, can i just copy the content of the old one onto the new one or do i have to go through the whole instalation process?
thanks in advance for help
dana

thanks bryceee
maybe you could help me with my memory stick.
aparently is suppose to be 2GB, not counting the devhook files and henb, i put around 500 mb in my ISO folder and my memory stick is almost full, cant work it out why. My PC doesn't show any other big files. And another thing in my ISO folder i have some small read only files and i can't delete them any ideas what files would they be and how to get rid of them?
All that PSP business is really new to me so help would be really appreciated.
dana

i haf a question.. my psp updated by itself.. dont ask me how, i just realised it from a 2.5 to a 2.81. firstly how da hell did i end up with a 2.81 version and second how do i downgrade.. i mean is it make-able?